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Did global warming and not competiton with modern man kill neanderthals?

Did global warming and not competiton with modern man kill neanderthals?

Climate – and not modern humans – was the cause of the Neanderthal extinction in the Iberian Peninsula. Such is the conclusion of the University of Granada research group RNM 179 - Mineralogy and Geochemistry of sedimentary and metamorphic environments, headed by professor Miguel Ortega Huertas and whose members Francisco José Jiménez Espejo, Francisca Martínez Ruiz and David Gallego Torres work jointly at the department of Mineralogy and Petrology of the University of Granada and the Andalusian Regional Institute of Earth Sciences (CSIC-UGR).

Sexual arms race: the co-evolution of genitalia

Sexual arms race: the co-evolution of genitalia

A team of biologists at Yale University and the University of Sheffield discovered anatomical details about the female reproductive tract in waterfowl that indicate that male and female anatomy have co-evolved in a "sexual arms race."

Solving the mystery of sleep

Solving the mystery of sleep

Sleep remains one of the big mysteries in biology. All animals sleep, and people who are deprived of sleep suffer physically, emotionally and intellectually. But nobody knows how sleep restores the brain.
Now, Giulio Tononi, a professor of psychiatry at the University of Wisconsin-Madison School of Medicine and Public Health, has discovered how to stimulate brain waves that characterize the deepest stage of sleep. The discovery could open a new window into the role of sleep in keeping humans healthy, happy and able to learn.

Arctic ice retreating more quickly than computer models project

Arctic ice retreating more quickly than computer models project

Arctic sea ice is melting at a significantly faster rate than projected by even the most advanced computer models, a new study concludes. The research, by scientists at the National Center for Atmospheric Research (NCAR) and the University of Colorado's National Snow and Ice Data Center (NSIDC), shows that the Arctic's ice cover is retreating more rapidly than estimated by any of the 18 computer models used by the Intergovernmental Panel on Climate Change (IPCC) in preparing its 2007 assessments.

This figure illustrates the extent to which Arctic sea ice is melting faster than projected by computer models.

When cookies catch the cooties

When cookies catch the cooties

Companies selling food products may need to worry about their goods catching "cooties" by coming in contact with certain other products, such as lard and feminine napkins, in shoppers' carts or on store shelves.
Based on their findings, researchers at Duke University and Arizona State University suggest companies may want to reconsider their packaging and shelf positioning strategies in order to safeguard their brands from offending products.
Of all the things companies worry about when selling food products, catching "cooties" is probably not high on the list. But new research suggests it should be.

The Beijing Solution To Cutting Pollution

The Beijing Solution To Cutting Pollution

If you're a communist dictatorship, the solution for pollution is simple - you ban driving.
They did just that during the Summit of the Forum on China-Africa Cooperation from Nov. 4-6, 2006 and it might be an indicator for what they will do during the 2008 Summer Olympics.
Chinese commuters make their way in heavy smog in Beijing in this December 14, 2004 file photo. REUTERS/Reinhard Krause/Files
Harvard University researchers Michael B. McElroy, Yuxuan Wang, and K. Folkert Boersma used data from the Dutch-Finnish Ozone Monitoring Instrument (OMI) to assess the impact in more rapid fashion than is usually possible.

How to look at dinosaur tracks

How to look at dinosaur tracks

Dinosaur tracks, once neglected, are now considered a key source of scientific information on dinosaur behavior and ecology.
A new study appearing in the May issue of The Journal of Geology provides fascinating insight into the factors geologists must account for when examining dinosaur tracks. The authors studied a range of larger tracks from the family of dinosaurs that includes the T. Rex and the tridactyl, and provide a guide for interpreting the effects of many different types of erosion on these invaluable impressions.

Theropod dinosaur track from central Texas
Edwards formation, Lower Cretaceous. (C) 2002, Glen J. Kuban

Ape gestures offer clues to the evolution of human communication

Ape gestures offer clues to the evolution of human communication

Researchers at the Yerkes National Primate Research Center, Emory University, have found bonobos and chimpanzees use manual gestures of their hands, feet and limbs more flexibly than they do facial expressions and vocalizations, further supporting the evolution of human language began with gestures as the gestural origin hypothesis of language suggests.

Now we know where we got it from.
Working with two groups of bonobos (13 animals) and two groups of chimpanzees (34 animals), Yerkes researchers Amy Pollick, PhD, and Frans de Waal, PhD, distinguished 31 manual gestures and 18 facial/vocal signals.

Improving electronic noses with artificial 'snot'

Improving electronic noses with artificial 'snot'

Researchers at The University of Warwick and Leicester University have used an artificial snot (nasal mucus) to significantly enhance the performance of electronic noses.
The researchers have coated the sensors used by odour sensing "electronic noses" with a mix of polymers that mimics the action of the mucus in the natural nose. This greatly improves the performance of the electronic devices allowing them to pick out a more diverse range of smells.

Pumping up weak muscle genes

Pumping up weak muscle genes

Scientists at the Salk Institute for Biological Studies have identified an enzyme that pumps up a cell’s ability to maintain healthy muscle and restores normal muscle function in genetically engineered mice with weak muscles. The study, published online in Nature Medicine, is the first to explore the part this enzyme plays in a cascade of events triggered by exercise-induced hormones and other signals.

Determining carbon flux between vegetation and the atmosphere: national biomass dataset

Determining carbon flux between vegetation and the atmosphere: national biomass dataset

After completing a two-year pilot phase, scientists at the Woods Hole Research Center are expanding the scope of the "National Biomass and Carbon Dataset" for the year 2000 (NBCD2000), the first ever inventory of its kind, by moving into the production phase.

To date, 5 of the 66 mapping zones have been completed in the NBCD2000 project. The remaining 61 will be completed at an approximate rate of one every seven working days. Credit: Wayne Walker/Greg Fiske. Woods Hole Research Center.

Track ESA spacecraft online

Track ESA spacecraft online

Want to know if the International Space Station is over you right now? You can view the location of ESA's Earth-orbiting spacecraft and other ESA-related missions in real-time via a new tracking site.

Credits: ESA